58 results about "Deicing fluid" patented technology

The present invention provides deicing compositions which are environmentally benign, a process for producing the composition from certain waste process streams, and methods of deicing and / or anti-icing.

An ice detection system that detects the onset of ice accreation on an aircraft's external surfaces, continuously measures its thickness and growth time history and provides the type of ice, glaze or rime, is disclosed along with an independent way to confirm that the contaminant is known to be ice and only ice. Total impedance data, thermal conductivity value and complex dielectric properties are used to discriminate between ice, water, deicing fluid and snow with measurements made by low cost, low power consumption, low profile, miniature electronic chips, components and devices collocated together on the external surface in a thin pliant patch that does not effect the airflow about the aircraft. The ice detection system provides ice accreation data and warning signals to displays and aural signaling devices in the cockpit for the pilot and to the control console of a ground controller flying the aircraft if it is unmanned.

A nontoxic deicing / anti-icing fluid includes a freezing point depressant selected from short chain polyols having 3 to 5 carbons atoms, and mixtures thereof, a wetting agent, an antioxidant / preservative, and water. The fluid has an LD50 greater than about 10,000 mg / L. Another deicing / anti-icing fluid includes the freezing point depressant, a vinylpyrrolidone polymer having a molecular weight between about 10,000 and about 700,000, and water. A runway deicing fluid includes glycerol, a buffer, an antioxidant / preservative, and water. Another deicing / anti-icing fluid includes a freezing point depressant having hydrophobic character, a wetting agent comprising an organophosphorus compound capable of producing an organic wettable surface, and water.

The present invention provides methods for use of novel deicing and anti-icing compositions based on by-produce of off-specification materials from biodegradable and renewable sources and which also can be used in a variety of other services.

The invention belongs to the technical field of a road surface deicing and anti-icing fluid and relates to a thickening road surface deicing and anti-icing fluid and a preparation method thereof. The deicing and anti-icing fluid comprises, by mass, 30-90 parts of at least one organic acid salt, 0.01-10 parts of at least one inorganic thickener, 0.01-1 part of corrosion inhibitor, 0-0.1 part of surfactant, and 10-70 parts of deionized water. Compared with the existing deicing fluid, the road surface deicing and anti-icing fluid has the advantages that the nano inorganic thickener is adopted to improve the viscosity of the deicing and anti-icing fluid; the effective antifreezing time is increased by more than 50%, namely, the time from deicing fluid spraying to invalidation due to natural dilution is extended; and through matching of the organic salt with appropriate corrosion inhibitor, the fluid can be used in an airport environment which has a high requirement for compatibility of materials with the environment.

A system and method for extracting the glycol from used or spent glycol mixtures, particularly aircraft deicing fluid, and simultaneously using the extracted water to hydrate brines, such as pavement deicing brines, are disclosed. The system provides comprehensive fluid handling and no discharge, as it re-concentrates glycol from spent aircraft deicing fluids.

Deicing compositions comprised of glycerol-containing by-products of triglyceride processing processes are disclosed.

The invention provides a railway carriage antifreezing solution and its preparing method, including the following components in weight precent: anhydrous calcium chloride 20-50%, alcohol 8-10%, and water 40-70%, and it can also adds in antirusting agent sodium nitrite in 1-2%. The preparing method: firstly adding water in a stirring jar, then adding in the anhydrous calcium chloride and stirring to fully dissolving them, eliminating foam, then stirring to the temperature at 19 deg.C-21 deg.C, adding in alcohol, adding in the antirusting agen, stirring for 30 minutes and then ending. It can ensure the vehicle skins do not freeze with the hydrous bulk materials in 10 hours in the open air, and thoroughly solves the freezing problem of the iron mine powder-like hydrous bulk materials in the winter, thus need not defreeze them in defreezing rooms to smoothly discharge, saving energy sources, shortening turnover cycle of railway carriages, reducing labor strength and reducing transport cost.

This invention overcome the disadvantage of the prior systems and produces a high velocity specially formed and constituted pressure aerodynamic stream for efficiently and effectively removing ice from an aircraft. The specially formed stream includes a stream within a stream, wherein a deicing fluid such a glycol is entrained within and encased by a surrounding jacket of entraining fluid such air. This deicing is now known as coaxial stream / stream within a stream deicing. The special nozzle allows the stream to maintain fluid separation over its flight path so that aircraft contact is made by to be known as coaxial stream / stream within a stream deicing. The coaxial stream / stream within a stream deicing is further enhanced by pressurizing the stream to deliver the stream as a high pressure high velocity stream to improved the aerodynamic sweeping action of the airstream.

A system for deicing a railroad portion, such as a switch point, switch plate, or length of rail, including a reservoir of deicing fluid, a deicing fluid dispensing assembly connected in hydraulic communication with the reservoir, at least one ice sensor positioned to report the temperature of the predetermined portion of the railroad system, and a deicing fluid flow actuator operationally connected to the reservoir. Energization of the flow actuator urges deicing fluid through the fluid dispensing assembly and onto the railroad portion.

The invention discloses an airplane deicing fluid proportioning device adopting electrical heating, which is characterized in that pipelines of a deicing fluid storage tank system and an electrical heating water storage tank system are connected in series; the respective components and arrangement of the two systems are basically same; the two systems are successively connected with electrical valves, variable frequency governor pumps, temperature sensors, flow sensors, pressure sensors, and the like; the pipelines of the two systems are connected through the first flow sensor and the second flow sensor; water and low-temperature deicing fluid adopting electrical heating are mixed; the water storage temperature can be adjusted by adjusting electrical power; and the temperature sensors, the pressure sensors, the flow sensors, the variable frequency governor pumps, and the like are connected to a programmable controller through output signals. The airplane deicing fluid proportioning device has the advantages of high efficiency, environment pollution reduction, resource saving, and subsequent maintenance and operation cost reduction. Meanwhile, personnel in airports can flexibly set the deicing fluid and water proportion, the outlet temperature, the flow, the flow rate, and the like by means of a key mode according to the current weather condition.

The invention relates to a deicing fluid heating and mixing device, which belongs to the field of airport ground equipment. The device comprises a boiler and a deicing fluid pipeline, and is characterized in that: a water outlet of the boiler is a parallel-connected loop with one path connected with a water tank and the other path connected with a deicing fluid heating pipe coil, a water inlet of the boiler is connected with the water tank, and the water outlet of the boiler is connected with a hot water pipeline through a retaining valve and a tee joint, the hot water pipeline and the deicing fluid pipeline are parallelly connected at outlets of the retaining valves thereof, a unidirectional deicing fluid branch is arranged between the deicing fluid pipeline and a safe deicing fluid loop, and a unidirectional water outlet branch is arranged between a water inlet pipeline and a safe water outlet loop of the boiler. As the deicing fluid heating and mixing device has a heating and mixing device of the clean water and the deicing fluid, the deicing fluid pipeline is parallel connected with the hot water pipeline, and a flow meter and a variable pump that are coupled are arranged on the deicing fluid pipeline and the hot water pipeline, the concentration proportion of the deicing fluid can be adjusted instantaneously according to different environments and airplane icing conditions, and consequently the goal for reducing the consumption amount of the deicing fluid can be achieved.

The invention discloses an environmentally-friendly automobile engine coolant which is prepared from the following raw materials in parts by weight: 30-70 parts of propylene glycol glucoside, 30-70 parts of water, 0.5-0.7 part of sodium hydroxide, 0.4-0.6 part of sodium nitrite, 0.5-0.7 part of sebacic acid and 0.2-0.4 part of benzotriazole. The novel environmentally-friendly automobile engine coolant, disclosed by the invention, is prepared by carrying out chemical reaction on starch and propylene glycol which are utilized as the raw materials in the presence of a catalyst (acid) at a certain temperature, using a generated product (propylene glycol glucoside) as a matrix of a deicing fluid, and preparing a small number of an antirusting agent, an antifouling composition and a foam suppressor. The environmentally-friendly automobile engine coolant adopts the propylene glycol glucoside for the deicing fluid; the propylene glycol glucoside has the advantages of no toxicity, harmlessness, good biodegradability and the like; the propylene glycol glucoside per se also has functions of sterilization and corrosion prevention; and the environmentally-friendly automobile engine coolant is completely environmentally-friendly.

The invention belongs to the field of plane airfoil deicing, and particularly relates to a compound deicing fluid and gasbag anti-icing system. The compound deicing fluid and gasbag anti-icing systemcomprises a controller (1), a deicing fluid tank (2), a pump machine (3) and a gasbag deicing assembly (4), wherein the gasbag deicing assembly (4) comprises a deicing gasbag (5) and an air flow distribution device (6), step-shaped sunken parts are arranged at the transition portion of both a deicing fluid spraying area and a gasbag deicing area of the upper surface and the lower surface a wing face front edge (7), and several micro holes (8) are formed around the wing face front edge and the side faces of the step-shaped sunken parts. By means of the compound deicing fluid and gasbag anti-icing system, through a compound anti-icing mode, the wing face deicing efficiency is improved, and the air safety margin under an icing environment is increased.

The invention relates to a wiper system (1) comprising: a driving arm (3) comprising a rod (30) extended by an end portion (31) that is able to be connected to a windscreen wiper (2); a windscreen wiper (2) fitted on said end portion (31) and comprising at least one ramp (10) that is able to channel a cleaning and / or deicing fluid; characterized in that said wiper system (1) comprises: a transporting pipe (5) for said fluid, which passes at least in part along said rod (30), said pipe (5) helping to channel said fluid towards said ramp (10); a connecting means (8) that helps to provide a removable connection between said pipe (5) and said ramp (10) and helping to channel said fluid from said pipe (5) towards said ramp (10); a retaining means (9) that is able to ensure fastening of said connecting means (8) to said rod (30).

The invention relates to an icing-preventing and deicing device for a jetting type helicopter rotor. The device is mounted in an icing area of the helicopter rotor and comprises main components as follows: an iron clad, icing-preventing and deicing spray nozzles, a deicing fluid and carbon powder spraying gas-liquid control system and a hard base used for fixed mounting, wherein the deicing fluid and carbon powder spraying gas-liquid control system comprises a deicing fluid source, a check valve, a carbon powder box, an air compressor, a hydraulic pump, a heat exchanger used for heating the deicing fluid with heat of waste gas of an engine, a two-way connector used for connecting gas-liquid circuits, a hot air and deicing fluid conveying pipeline and a pressure meter used for measuring the gas-liquid circuits. Carbon powder is sprayed to be used as an icing condensation nucleus, so that subcooled water droplets can ice in advance; icing-preventing and deicing work can be performed on the helicopter rotor in a deicing fluid spraying and heating manner, and the device has the characteristics of short deicing time, low energy consumption, complete deicing and the like and can meet icing-preventing and deicing requirements in various poor meteorological environments and in different icing states.

The invention discloses a method for predicting the starting of spraying of an intelligent anti-icing and snow-removing control system. The method comprises a plurality of judgment steps that when itis judged that the spraying is needed, an immediate spraying instruction is issued to a pump station unit by a controller; the spraying position is marked as a spraying state, and the spraying amounttime X and the spraying circulating frequency N are corrected and calculated; the current single-time spraying time and the spraying circulating frequency are respectively assigned to a spraying timetimer and a spraying circulating counter of a spraying single-group nozzle. The invention is advantageous in that a plurality of grades of roads and weather judgment conditions are set, and whether the deicing fluid needs to be sprayed or not is judged gradually, so that the ice-removing and snow-removing efficiency can be improved, and the use of deicing fluid can be reduced; according to the invention, whether spraying can be started or not can be judged automatically, and the purposes of automatic operation and unattended operation are achieved; not only can the manual investment be reduced, but also the anti-icing and snow-removing work can be responded in time.

The invention relates to the field of airport ground facilities, in particular to a deicing fluid hybrid heating device comprising a deicing fluid pipeline, a water pipeline and a heating boiler. The deicing fluid hybrid heating device is characterized in that the deicing fluid pipeline, an outlet of the water pipeline and a water inlet of the heating boiler are connected; a water outlet of the boiler is connected in parallel with an aloftwork arm spray gun and a ground spray gun; an inlet of the water pipeline is connected with a water tank; and an inlet of the deicing fluid pipeline is connected with a deicing fluid tank. Due to the arrangement of a clear water and deicing fluid hybrid heating device, the deicing fluid pipeline is connected in parallel with one water pipeline, the deicing fluid pipeline and the water pipeline are provided with a flowmeter and a variable pump which are linked, the mixing ratio of a deicing fluid and water can be controlled by a flow parameter set by a PLC (Programmable Logic Controller), and a deicing vehicle can regulate the concentration ratio and the temperature of the deicing fluid in real time according to different conditions and icing states of an airplane during deicing operation, thereby achieving the aims of reducing the consumption of the deicing fluid and increasing the reaction speed.

The invention provides a locomotive vehicle deicing fluid. The locomotive vehicle deicing fluid comprises, by weight, 30-70 parts of water, 30-70 parts of freezing point depressant, 0.01-5 parts of thickener, 0.01-1 part of surface active agent and 0.01-1 part of corrosion inhibitor. The freezing point depressant is one or more of dihydric alcohol and polyhydric alcohols mixed in any proportion. The thickener is one or more of silicon dioxide gel, cellulose, unsaturated hydroxy acid and magnesium lithium silicate mixed in any proportion. The surface active agent is one or more of fatty glyceride surface active agent, polyoxyethylene surface active agent, sulfoacid compound surface active agent and polyhydric alcohol surface active agent mixed in any proportion. The corrosion inhibitor is one or more of nitrogen, or sulfur or hydroxy organic corrosion inhibitor, carbonate corrosion inhibitor and phosphate corrosion inhibitor mixed in any proportion. The locomotive vehicle deicing fluid has excellent adhesion property, and freezing of the bogie portion on the bottom of a vehicle in a severe cold area can be prevented.

The aviation emergency response system includes a number of ground subsystems located on an airport, and a number of subsystems installed in an aircraft. The ground subsystems may include dispensers along the edges of the runway(s) for dispensing foam, water, and / or deicing fluid, and an array of cameras installed along the runway edges. Low lateral retaining dams may be provided along the edges of the runway(s), and appropriate drainage is also provided for the runway. A tire-puncturing apparatus may also be installed in the surface of the runway, and energy-absorbing overruns are provided at the runway ends. A control center including appropriate monitoring and control systems is also provided on the airport. Aircraft may be equipped with external cameras for monitoring the condition of the aircraft in flight, and corresponding annunciator systems placed in the aircraft cockpit for appropriate response(s) by the flight crew.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

The invention discloses an automatic tunnel portal pavement deicing and anti-icing system. The automatic tunnel portal pavement deicing and anti-icing system comprises a fluid reservoir, a plurality of nozzles, a fluid delivery pipe, a fluid discharge pipe and an electromagnetic valve, wherein the fluid reservoir is arranged at a tunnel portal and used for storing deicing fluid, the plurality of nozzles are mounted on the two sides of a road outside the tunnel portal respectively, the fluid delivery pipe is connected to the nozzles, one end of the fluid discharge pipe is connected with the fluid delivery pipe and the other end of the fluid discharge pipe is connected to the bottom of the fluid reservoir, and the electromagnetic valve is arranged on the fluid discharge pipe. If the pavement at the tunnel portal is covered with snow or ice, a road condition sensor feeds back a measurement signal to an industrial controller, and the industrial controller controls pull-in of a relay II and switching on of an electromagnetic valve by use of an end Q2 and an end QCOM, so that the deicing fluid in the fluid reservoir is delivered into the fluid delivery pipe via the fluid discharge pipe and finally is sprayed onto the pavement at the tunnel portal by the nozzles; as a result, the snow cover or the ice layer on the road near the tunnel portal can be melted. The industrial controller controls the relay II to be powered off and the electromagnetic valve to be switched off in certain time after spraying, and at the moment, the nozzles stop spraying the fluid. The automatic tunnel portal pavement deicing and anti-icing system has the advantages of automatic switching on and off, simple structure, no need of manual operation and no need of road closure.

A computer-enabled system is provided for monitoring the dispersal of deicing fluid from a deicing vehicle onto an aircraft's designated exterior portion by an operator. The system includes a dispensed-fluid-sensor, an aircraft database, a computer processor, and a non-transitory computer-readable storage medium storing computer-readable program code configured to calculate the surface area of the designated exterior portion based upon information retrieved from the aircraft database.

A plane deicing system with a function of electrically heating deicing fluid comprises a vehicular platform, the deicing fluid, a deicing fluid tank, a deicing fluid pump, an electric heating boiler, and a deicing fluid spraying and atomizing device and is characterized in that the deicing fluid comprises ethylene glycol, propylene glycol, sodium acetate, dipotassium hydrogen phosphate and surfactant, and the surfactant is fatty alcohol polyoxyethylen ether sodium sulfate. By the electric heating boiler, the plane deicing system is fast and convenient to operate, efficient and safe. By the deicing fluid, plane deicing efficiency is increased, and environmental pollution is lowered.

The invention provides environment-friendly deicing fluid and applications of the environment-friendly deicing fluid in road deicing. The invention discloses the environment-friendly deicing fluid, the deicing fluid contains a fermentation product and salt, wherein for 100 weight parts of the fermentation product, the content of salt is 12-50 weight parts, and the salt is organic salt and / or inorganic salt; the fermentation product is prepared through the method comprising the following steps: (1) inoculating a microbial strain capable of producing 1,3-propanediol into a culture medium containing glycerol, thus obtaining a material before fermentation; and (2) carrying out anaerobic culture on the material before fermentation in the step (1) till the concentration of 1,3-propanediol is 50-500 g / L, thus obtaining the fermentation product. During the preparation process of the environment-friendly deicing fluid, no environmental pollution is generated, the environment-friendly deicing fluid can naturally degrade in the environment and causes no damage to the road and the surrounding facilities, and thus the problem that during the snow melting and ice melting processes adopting the existing deicing fluid, environmental pollution and corrosion to the road facilities are caused, is solved, meanwhile, the snow melting and ice melting speeds are accelerated, the protection time is increased, the work of the mechanical spraying vehicle is effectively matched, and the manual operation is reduced.